const express = require('express');
const path = require('path');
let app = express();

app.get('/getdata',(req,res)=>{
    console.log('有请求过来了')
    res.setHeader('Access-Control-Allow-Origin','*');
    res.json({
        info:'我是4000端口返还的内容',
        status:1
    })
})

app.listen(4000,function(){
    console.log('4000');
});